Answer: To ensure a good harvest
Explanation:
The reason is because the purpose of dance rituals in Iroquois culture is usually to ensure a good harvest and to appease the spirit of animals in which the dance was performed by the patient and paired conductors, dance leaders, and singers from opposite moieties
The underlined term (flies) used verb+es which is used to describe the verb that still being doned regularly.
If the verb is currently being done , the verb will use-ing , if it's a plan in the future, we will see 'will' before the verb and the verb will not use -es
hope this helps
I think the adjective in the sentence is
Glass
The third one is correct.
